GPU has 6 pin and 8 pin, PSU only has 8 pin

[ringo882013]

My GPU has slots for an 8 pin and 6 pin, but the PSU I ordered by mistake only has a 6+2 pin cable. Will it work with just the one at least temporarily or do I absolutely need a new PSU? My GPU is a Radeon R9 280 3gb, and this is the PSU I have:

https://m.newegg.com/products/N82E16817182295

It seems to be a decent PSU if a bit low on wattage. I’m guessing the answer is just to get a new PSU but I wanted to be sure.

 

[Supahos]

It'll need both plugged in to function properly

 

[Dark Lord of Tech]

Time for a new PSU that can support the card.

PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic - FOCUS Plus Gold 550 W 80+ Gold Certified Fully-Modular ATX Power Supply ($69.99 @ Newegg)
Total: $69.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-02-05 17:34 EST-0500

or

PCPartPicker part list / Price breakdown by merchant

Power Supply: Corsair - CXM 550 W 80+ Bronze Certified Semi-Modular ATX Power Supply ($39.99 @ Newegg)
Total: $39.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-02-05 17:35 EST-0500

 

[scout_03]

get one that could power the gpu and system at least 550 watts or more check corsair txm ,evga g3 and seasonic.

 

[ringo882013]

Ok, thank you for the replies. Out of curiosity what would happen if I did only use the one 8 pin? I’m not going to try it though, it’s not worth the risk. Also I may be upgrading to probably a RX 460 or similar, would those PSUs be enough to power that?

 

[scout_03]

give a look at this https://www.newegg.com/Product/Product.aspx?Item=N82E16814125966&Description=rx%20570&cm_re=rx_570-_-14-125-966-_-Product it use only one 8 pins for the other if you dont use all power cable on wont work at max specs and could made issue .

 

[ringo882013]

Are you 100% sure it only needs one 8 pin? And is a 450w PSU enough to power it?

 

[scout_03]

from specs it tell one 8 pins and they ask for a 450 watts for it so you need power for the other parts also at least a good 550 watts even a 650 watts would be better .